I have a house in chicago. A few years back the old lead supply line inside the house was replaced with copper, all except for a foot long section at the front of the house which is still lead and connected to the copper with a compression connector. Red copper was used, and it's buried about 2 feet below the basement level. The basement has a dirt floor, and I'm getting ready to pour a concrete slab. The ppe is a little more than 2 feet below where the slab will start.
I'm now nervous about this line, as I understand you shouldn't use red copper underground and shouldn't have joints buried, and I know there must be joints under there.
My question is, should I re-excavate it now while I have the chance?
If so, what should I replace it with? K Copper? Or can I use CPVC or PEX?
Will there be any issue connecting to the lead with K, CPVC, or PEX?
My plan is to keep the small section near the front 'open' and not pour a slab over it, and when I have more money, will get the city to bring in a new line from the street, so the lead will be gone completely.